1. What is Mechanical Power?

Mechanical power is the rate at which work is done or energy is transferred in a mechanical system. For rotating systems, it's the product of torque and angular velocity.

2. How Does the Calculator Work?

The calculator uses the mechanical power equation:

Where:

• \( P \) — Mechanical power (watts)
• \( \tau \) — Torque (Newton-meters)
• \( n \) — Rotational speed (revolutions per minute)
• \( \pi \) — Mathematical constant pi (~3.14159)

Explanation: The equation converts rotational speed from rpm to radians per second (factor of π/30) and multiplies by torque to get power in watts.

3. Importance of Mechanical Power Calculation

Details: Calculating mechanical power is essential for motor selection, energy efficiency analysis, and mechanical system design.

4. Using the Calculator

Tips: Enter torque in Newton-meters and rotational speed in RPM. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between mechanical and electrical power?
A: Mechanical power refers to power in mechanical systems (force × velocity), while electrical power is voltage × current.

Q2: How do I convert watts to horsepower?
A: 1 horsepower ≈ 745.7 watts. Divide wattage by 745.7 to get horsepower.

Q3: What affects mechanical power output?
A: Power depends on both torque and speed. Higher torque or higher speed increases power output.

Q4: Is this calculation valid for all motors?
A: This calculates theoretical mechanical power. Actual power may differ due to efficiency losses.

Q5: What's typical power range for electric motors?
A: Small motors may be <100W, industrial motors can be several kW to MW range.